THE B1: DIY ELECTRIC MOTO MADE EASY
The Bomb Moto B1 rolling chassis is an affordable eMoto solution for the DIY enthusiast. Add a battery, controller, throttle... and go!
At $999 USD, the B1 is your gateway to electric off-roading. Learn more about this exciting electric dirt bike below!
ORDER TODAY - Limited in stock with new inventory being added daily.
ALL-NEW B1 Rolling Chassis w/Motor
The new 2026 B1 Rolling Chassis with Motor is a major upgrade to the popular B1 platform. Designed with builders and modders in mind, this rolling chassis comes equipped with a custom-collaboration QS120 45H motor, featuring their highest RPM rating to date. Engineered for serious performance, this motor can comfortably handle 100 peak amps, delivering exceptional torque and power for its class.
Builders can push their custom setups past 50+ mph, unlocking thrilling speed with newfound torque. Even at a modest tune of 70 amps, the B1 can hit 45 mph and peak at 8,500 RPM—making it one of the most versatile and exciting builds available in its category.
NEW Product Upgrades
New 1,000 lb rear shock • #35 chain and sprockets • New, taller aluminum handlebar with cross bar • Upgraded master brake cylinder • Strengthening welds to seat and swingarm • Standard rim locks • Blacked-out triple clamp & riser • Improved number plate mount • Improved fasteners
KEY FEATURES
B1 HIGHLIGHTS
• An affordable DIY electric dirt bike platform
• Mid-drive motor (recommended 5kW peak power)
• 45 mph recommended top speed
• High-performance moto brakes w/ergonomic levers
• Ships from a US company in California
• Just add battery, controller/cable... and go!
• Bomb Moto battery available
Tested & Proven
The B1 has been aggressively tested in real-world conditions, resulting in dozens of enhancements to the latest model. Enjoy peace of mind from hundreds of hours of R&D in the Bomb lab.
Your Platform for Customization
Bomb Moto puts creativity in the customer's hands. Add your preferred battery, controller and throttle to build a custom e-moto bike - for much less than buying a complete bike!
MINI MOTO. BIG FUN.
Sized similar to a 110 cc trail bike, the B1 chassis has a 28-inch seat height and 2-inch lowered footpegs for increased legroom.It's a great fit for youth, newer riders and adults seeking a fun DIY pit bike project.
Specifications
Motor
BLDC electric motor
Rated Power: 2kw @ 60v
Peak Power: ~5kw with stock gearing & 70a constant tune recommended
Efficiency: 88-90%
Top speed: ~45mph w/ 70a output tune, depending on rider/ride
RPM: 2,500 (recommend 5,000 rpm tune)
Front sprocket: 10-tooth, for #35 chain
Torque bias SMD magnet placement
Heavy gauge motor phase wires
Thermic Probe: KTY82/122 included
Stator: ~80mm
Built-in heat sink included
Thick 17mm spline, Double D
Chassis & Components
Frame: Steel
Swingarm: Steel
Triple clamp: Forged w/riser
Front Suspension: Inverted, hydraulic aluminum 42mm fork
Rear Suspension: Adjustable rear shock, adjustable for preload & damping), 51mm travel, 1,000 lb rating
Wheels: 14" front/12" rear wheels w/ pneumatic off-road tires
Brakes: True hydraulic moto brakes, 175mm single-disc front/rear, handlebar-mounted, ergonomic levers, long brake lines for taller handlebars
Max rider weight: 180 lbs
Footpeg mounts: lowered 2"
Bodywork: Durable plastics w/Bomb Moto graphics
Chain/Sprockets: #35 - 2,300 lbs rating, sprockets 10/62 (new)
Battery tray: Flat tray w/multiple strap connections
Storage: Under-seat options for smaller controllers (i.e. Flipsky)
Dimensions
Seat Height: 28"
Wheelbase: 41"
Handlebar: 25" wide
Ground Clearance: 12"
Chain: #35, rated >2,300 lbs tensile strength.
Gearing: 10/62 front/rear sprockets (6.2:1)
Throttle/grips/battery/controller not included
B1 Battery (72V)
For the DIY, Bomb Moto's 72V, 30Ah battery was designed specifically for the B1 rolling chassis. The best value of any battery in its class, it was designed to satisfy the extended range needs of e-moto riders. The battery pack's specially designed footprint creates a lower center of gravity and allows more working room for controllers and other components above the battery. For use in the B1 Rolling Chassis as DIY or for those looking to upgrade their B1 Complete bikes from 60v. Features include a battery management system (BMS), copper circuitry, and protective casing. Comes with leads and charge port connectors.
Can work in several different bikes.
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